Rs-232 Dce Cable Pinouts - 3Com SuperStack II User Manual

RS-232 DCE Cable
Pinouts
This cable connects the bridge/router to an RS-232 DTE.
Figure 21 Flex-WAN and RS-232 DCE Connectors
To SuperStack II NETBuilder
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45
60 59 58 57 56 55 54 53 52 51 50 49 48 47 46
60-pin Flex-WAN male connector
.
Table 13 RS-232 DCE Cable Pinouts
Flex-WAN Connector
Signal Pin
DCD/LL 33
DSR/DTR 34
CTS/RTS 35
RxD/TxD 36
RxC/TxCE 38
TxCE/TxC 39
Nil/RxC 40
TxD/RxD 41
RTS/CTS 42
DTR/DSR 43
LL/DCD 44
Circuit Ground 45
Shield Ground 46
Shorting Group 1 50
51
* Unused twisted wires of a twisted pair should be connected to Shield Ground. In this cable
this is one wire of each of the twisted pairs 1 to 12.
Serial Connectors and Flex-WAN Cables
1
14 15 16 17 18 19 20 21 22 23 24 25
25-pin female connector
RS-232 DCE
Connector
Direction Pin Signal
←
18 LTST
←
20 DTR
←
4 RTS
←
2 TxD
←
24 TxCE
→
15 TxC
→
17 RxC
→
3 RxD
→
5 CTS
→
6 DSR
→
8 DCD
- 7 Circuit Ground
Cable Shield 1 Shield Ground
- - -
To DTE
2 3 4 5 6 7 8 9 10 11 12 13
Twisted Pair
1
2
3
4
5
6
7
8
9
10
11
12
-
-
49
*